Bookbinding



De?. 7, 1937. P. w BlDWELL v 2,101,804

BOOKBINDING Filed June 17, 1935 1N VEN TOR.

ATTORNEY.

Patented Dec. 7, 1937 PATE N T OFF! CE BooKINDING Paul W. Bidwell,Holyoke, Mass. Application June .17, 1935, serial No. 26,893

3 Claims. This invention .relates to improvements in book binding and isdirected .more particularly to improvements in apparatus for assemblingspiralv bindings and perforated leaves of a book.

'Ihe principal objects of the invention'are directed to the provision ofa novel apparatus for screwing a helical or spiral binding member into arow of Aperforations provided adjacent the edge 0f a stack of leaves toform a book.

According to special features of the invention, the apparatus isconstructed and arranged in a novel manner so as to be capable ofefciently'and easily screwing a helical or spiral bindinginto theperforations of a stack of leaves of a book and there is providedautomatic means for stopping 1 the operation of the apparatus when thebinding member has been screwed into the perforations to the desiredextent.

Various other novel features and advantages of the invention will behereinafter more fully referred to in connection with the preferred formof the invention, reference being had to the ac'- companying drawingwherein:

Fig. l is a side elevational view of an apparatus embodying the novelfeatures of the invention; Fig. 2 is a plan view of the apparatus shownin Fig. 1;

Fig. 3 is a partial transverse sectional elevational view of theapparatus shown in Figs. 1

-. and 2;

Fig. 4 is an enlarged sectional fragmentary'view.

to explain certain features of the invention;

Fig. 5 is a partial elevational view of one of the rolls of theapparatus; and A Fig. 6 is a plan view of the upper portion of a bookshowing the leaves perforated with spaced openings anda binding elementwhich: is screwed into the perforations by the apparatus of this.invention.

invention will be fully described.

Side frames 2 are provided and. these are arranged in spaced relationVasv shown. AA driving shaft 4 is journalled in the frames. 2v for roi,tationand a pulley such as 6 may be provided on the shaft 4 which may bebelted to a motor or other source of power. Of course, other means fordriving the shaft 4 may be provided, if desired.

Lever arms 8 are oscillatable on the shaft 4 and their forward ends havea roll I0 journalled therein. A roll I2 is journalled in the side frames2 below the roll I0.

A sprocket I4 provided on the shaft 4 and a sprocket IE provided on theroll I0 are connected Referring now to the drawing more in detail the bya chain i8 Yextending `therearound so that the roll VIll is driven lfromthe shaft 4. However, as stated, the arms 8' are oscillatable on theshaft li so that they and the rol-'l Ii] may still swing up and down fora .purpose to be described. 5

Another sprocket 20 is also provided on the shaft 4 while a sprocket 22is disposed on roll I2. These sprockets 2l)V and 22 are`connected by avchain 24 extending therearound so that the lower roll I2 is also drivenfrom the shaft 4.

Brackets 30, provided on the upper sideV of the si-de frames 2, areslotted, as at 32, and adjush ing screws or bolts 34 extend through theslots into engagement with the frames to provide a means for securingthe brackets 30 in various positions of adjustment. What may be called aguide roll 36 is .iournalled for rotation in the brackets 3i).

A table 38 is'disposed at the forward side of the apparatus and isadapted to support a book or books. rThe levers 8 haveears 42 and a bar40 has beters.- U.

In the'form of the invention shown, with ref- 3 erence to Figs. 4 and 6a book represented by L, which is provided with ay row of perforationsP, is placed on the'table 38 with the end of the binding B started inthe perforations, as shown. The con- 3 volutions of the binding arecaused to bear against the guide roll 36 so as to position the binding Bwith reference to the lower oll I2, somewhat after the manner shown'in`Fig. 4.

Then the arms 8 and roll IU are allowed to be' lowered so thatthe upperroll I@ engages the binding B; Th'at is, the roll IIJy iscausedto'contact the binding B so that the convolutions ofthe' bindingmember are engaged by the kgrooves liof` the roll I0. With the book Land binding mem: ber B thus disposed with reference to the rolls Iii andI2, which, as stated, are being rotated, the binding member B is causedto rotate and screwed into the perforations P.

When the binding member has been screwed into the perforations the arms8 are elevated to move the roll I 0 upwardly so that the member Bis nolonger rotated. The arms 8 may be moved downwardly and upwardly by anysuitable means but, in the form of the invention shown, the arms 55 8and its associated roll I0 tend to assume the operative position shownin Figs. 1, 3, and 4'by means of gravity.

In order to move the arms 8 and roll I0 upwardly there is provided asolenoid or magnet 50 having an armature 52 which is connected by achain or the like 54 to the bar member 44. When the member 50 isenergized to draw the armature 52 downwardly, the arms 8 carrying rollI0 are swung upwardly to an inoperative position. The solenoid or magnetE@ may be energized by connecting to a source of energyv and amanually-operated switch may be provided to open and close the circuit.

It is desired according to one feature of this invention that the saidcircuit be opened when the binding member B has been screwed into theperforations P to the desired extent. That is, when the leaves L andbinder B have been assembled so that a book is formed, it is desirableto cease the screwing action in order that the member B does not screwtoo far to project beyond the last perforation in the row. Also, it isjust as desirable that the screwing action continue long enough so thatthe binder B extends the entire le-ngth of the row. x

To this end there is provided a circuit-closing device indicatedgenerally by Gllassociated withL the table38. This may consist of acontact 62 and a yieldable contact member 64, the latter of whichextends inwardly from the table 38'so that a free end thereof lies inthe path of the binding B. The said members 62 and B4 are preferablysuitably insulated as at 65 and a bolt 66 extends through a slot $8provided in the table in order that the circuit-closing device may beadjusted longitudinally of the table. The device is preferably connectedin series with the solenoid 50.

The leaves L and binder B are associated in the manner shown in Fig. 6and then located onthe table 38 in some definite position relative tothe device 68, as by means of a line or mark on the table or by guides.and l2 are caused to engage the member B and rotate the same until it isscrewed into the per-l forations P forming the book to the point wherethe foremost end of the member B contacts the member 64 of thecircuit-closing device.A

At this point the said device, being connected in series withthe-solenoid 50, closes the circuit to energize the solenoid and causethe arms ,8 and the roll l@ to be elevated.V In this way the rotation ofthe binding member B is stopped and it is possible to prevent thebinding being carried beyond apredetermined point with refn erence tothe leaves.VV

WhileI have described the invention in great detail and with respect toa preferred form thereof,` it is not desired to'be limited thereto sincemany changes and modifications may be made therein without departingfrom the spirit and scope of the invention. What it isdesired to claimand secure by Letters Patent of the United States is:

Then the rotating rolls l0' 1. An apparatus for binding the perforatedleaves of a book with a preformed spiral binding member comprising incombination, a horizontal support for said book. a grooved rolljournalled for rotation adjacent said support, an arm swingable relativeto said support, a second grooved roll journalled for rotation thereinfor co-operating with the first-named roll to advance a spiral bindingalong the perforations of the leaves of a book on said support,electrically operated means to swing said arm to separate said rollswhen a binding has advanced along said support a predetermined distance,the said means including a circuit-closing device on said supportengageable by and actuated by the spiral binding as the same is advancedalong the support a predetermined distance and a circuit connected tothe electrically-operated means and circuit-closing device, all adaptedand arranged whereby the circuit-closing device is actuated by a spiralbinding when the same has advanced along the support a predetermineddistance to cause the said rolls to be separated.

2. An apparatus for Ybinding the perforated leaves of a book with apreformed spiral binding member comprising in combination, a horizontalsupport for said book, a grooved roll journalled for rotation adjacentsaid support, an arm swingable relative to said support, a secondgrooved roll journalled 4for rotation therein for co-operatin'gwith thefirst-named roll to advance a spiral binding along the perforations ofthe leaves of a book on said support, electrically operated meansY toswing said arm to separate said yrolls when a bin'dinghas advanced alongsaid support a' predetermined distance, the said means including'acircuit-closing device on said support engageable by and actuated by thespiral binding as the same is advanced along the support a predetermineddistance and a circuit connected tothe electrically-operated means andcircuitclosing device,l all adapted and arrangedwhereby thecircuit-closing device is actuated by a spiral 'binding when the samehas advanced along the support a predeterminedrdistance to cause thesaid rolls to be separated, the said circuit-M closing device includingrelatively movable con` tact points and means to facilitate adjustmentof the device along said support.

3. An apparatus for binding the perforated leaves of a book with apreiormed spiral binding member comprising in combination, a horizontalsupport for said book, agrooved roll journalled,

for rotation adjacent said support, an arm swingable relative lto saidsupport,.a second grooved4 roll journalled for rotationthereinrforgcc-operating with the first-named roll to, advance aspiral'binding along the perforations of the leaves..

of a book on said support and electrically operated means to swing saidarm to separate said rolls when a binding :has advanced along saidsupport a predetermined distance, the said means including a solenoidhaving a slidable member connected to said arm. a

PAUL W. BIDWELL.

